title: Dynamically interchangeable nanoparticle superlattices through the use of nucleic acid-based allosteric effectors.
abstract: DNA is a powerful tool for programmably assembling colloidal crystals, and has been used to generate nanoparticle superlattices with synthetically adjustable lattice parameters and crystal symmetries. However, the majority of these superlattice structures remain static once constructed, and factors such as interparticle distance cannot be controlled in a facile and rapid manner. Incorporation of these materials into functional devices would be greatly benefitted by the ability to change various aspects of the crystal assembly after the lattice has been synthesized. Herein, we present a reversible, rapid, and stoichiometric on-the-fly manipulation of nanoparticle superlattices with allosteric effectors based upon DNA. This approach is applicable to multiple different crystal symmetries, including FCC, BCC, CsCl, and AlB2.
authors.affiliation: Department of Materials Science and Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States.
authors.forename: Youngeun
authors.initials: Y
authors.lastname: Kim
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Macfarlane
authors.forename: Chad A
authors.initials: CA
authors.lastname: Mirkin
mesh_terms: D004247:DNA / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D013816:Thermodynamics
chemical_list: D004247:DNA